Sometimes enough is enough
Patience and politeness are expected from IT staff. But the same can be said for any employee -- it's called good manners. A person can put up with only so much rudeness and timesucks.
For instance, what can a techie do about pushy vendors who just don't quit? One IT pro came up with some techniques, such as transferring the vendor to the fax line or asking them for their credit card number, so they could be billed for the conversation. IT staff put up with a heckuva lot and sometimes have to push back to keep sane.